Newsgroups: comp.robotics
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From: wrb@teal.csn.org (William R. Bishop)
Subject: 3D LIDAR; range data + intensity. 
Message-ID: <CCHCB2.5rF@csn.org>
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Organization: William R. Bishop
Date: Sat, 28 Aug 1993 17:23:25 GMT
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  Perceptron makes a 3D camera (LIDAR) that I have used experimentally.
I saw a version they were sending to NASA that could do 15 frames/second
with about a 300x300 square field of intensity and range data.  The range
data is 12 bits, and is limited to an "ambiguity inverval".  That is, it 
measures phase change between the xmit and rcv light so you can't go past
2 PI.  The laser wavelength you use determines the distance covered by the
12 bit depth of field.

  They are sending one to Hannaway & Associates (Boulder Co.), and I'll be
working on an application that will take them into the field, so we'll find
out how rugged they really are :-).


